If you have a flexible spending account through work, there is a decent chance you are sitting on cash that will evaporate in a matter of weeks.
Use-it-or-lose-it rules mean any money left in your account after the plan's deadline typically goes straight to your employer.
Not to you, not to your retirement, not even to a charity of your choice.
This is the part of the system almost nobody explains at open enrollment.
You get a pitch about tax savings in October, then a quiet reminder in December that the clock is running.
The exact deadline depends on your specific plan, which is why so many people get caught off guard.
Some accounts run on a calendar year and require you to spend by December 31.
Others offer a grace period, usually until March 15, letting you incur new expenses for a couple extra months.
A third group gives you a carryover, letting you roll a limited amount into next year.
The carryover figure is where things get interesting.
The IRS sets a maximum each year, and it has crept up slowly.
That sounds generous until you realize the average employee contributes far more than that, and the surplus is what vanishes.
Who benefits from all this forfeited money?
Companies are allowed to keep unspent FSA funds to offset their own administrative costs.
Some use the surplus to fund the very plan they're promoting to you.
It's a rare arrangement where the house always wins, and the house is your HR department.
More than most people think, and the list is longer than the drugstore aisle.
Prescription glasses and contacts, dental cleanings and fillings, hearing aids, bandages, pregnancy tests, sunscreen, acne treatments, and even some over-the-counter pain relievers now qualify without a prescription thanks to a 2020 law.
Therapy, counseling, and certain medical equipment count too.
The catch is that these purchases must happen before your plan's cutoff, and you usually need to submit receipts for reimbursement if you paid out of pocket.
Swipe the FSA debit card directly and you skip most of that paperwork, though keep receipts anyway in case of an audit.
One more wrinkle worth knowing: if you're married and your spouse also has an FSA, you can't double-dip on the same expense.
And if you leave your job mid-year, check whether your plan allows you to keep spending the full annual election or only what you've contributed so far.
The rules vary, and they are not in your favor by default.
A few practical moves before the deadline.
Log into your account today and look at the balance.
Then check the plan document for the exact cutoff date and whether a grace period or carryover applies.
If you have money to burn, schedule that eye exam, refill prescriptions, or stock up on eligible supplies you'll use anyway.
Just don't buy random stuff you'll never touch to avoid a forfeiture, because that's not saving money either.
My take: these accounts are genuinely useful if you have predictable medical costs, but the structure is tilted against anyone who guesses wrong.
The deadline isn't a nudge to spend wisely.
Final Thoughts
It's a deadline designed to make sure someone else keeps what you set aside.